Are you tired of your boring grey mouse? Liven things up with Legami's Wireless Mouse with USB Receiver. Precise, fast, and easy to use and connect: just insert the battery and connect the USB receiver! Ambidextrous design - Three speed options: 800 DPI,1200 DPI, 1600 DPI - USB 2.0 interface - Number of buttons: 4 - Type of scrolling: wheel - Pointing sensor: optical LED